Machine for applying varnish, &amp;c.



No. 687,4'8l. Pafented Nov. 26, l90l.

- w. c, KAMMEBERG. J. J. MINER.

MACHINE FOB APPLYING VARNISH, 81.6.

7 (Application filed Apr. 4, 1901.) (No Model.) 2 Sheets-Sheet l.

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N0. 687,45". 7 Patented Nov, 26, [90L W. G. KAMMERER & J. J. MINER.

MACHINE FOR APPLYING VABNISH, 81.6. (Applicafion filed Apr. 4, 1901'.(No Model.) 2 Sheets-Sheet 2.

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NITED STATES PATENT FFICE.

WILLIAM C. KAMMERER AND JAMES J. MINER, OF ST. PAUL, MINNESOTA.

lVlACH-INE FOR APPLYING VARNISH, &.O.

SPECIFICATION forming part of Letters Patent No. 687,481, dated November26, 1901. Application filed April 4,1901. Serial No. 54,259 (No model.)

To all whom it may concern:

Be it known that we, WILLIAM C. KAM- MERER and JAMES J. MINER, citizensof the United States of America, and residents of St. Paul, in thecounty of Ramsey and State of Minnesota, have invented certain new anduseful Improvements in Machines for Applying Varnish, be, of which thefollowing is a specification.

Our invention relates to improvements in machines for applying varnishor other finishing liquid to the surface of sheet metal or othermaterial.

To this end our invention consists, primarily, of a series of rolls orrollers each rotating in contact with the next in series. The first rollrotates in a bath containing the fluid to be applied to the sheet metaland is for convenience herein termed the varnish-roll. The second rollis resilient or of flexible surface and is called by us thecoating-roll, and the third roll, which cooperates with the coating-rollto draw the sheet through the machine, we designate the conveying-roll.The conveying-roll is provided with a scraper, which returns the varnishfrom its surface to the reservoir containing the bath. All these rollsmove with equal surface speed, and the coating-roll is adapted to gatherthe liquid from the varnish-roll,which has raised it from the bath, andapply it to the lower face of the sheet metal or other article to becoated which passes between the coating and carrying rolls. The sheetmetal after passingbetween the coating and conveying rolls is deliveredby a system of rotary disks.

We have found in practice that by applying the varnish to the face ofthe sheet metal from below and by returning the varnish from the surfaceof the conveying-roll to the bath it is possible to simplify theconstruction of the machine and to operate it more rapidly, as well asto finish the sheet metal more efficiently and uniformly thanwithdevices of this character formerly in use which have applied the varnishfrom above. This improvement also promotes cleanliness and the economicuse of the finishing fluid.

Our machine consists of the features of construction andnovel'combination of parts, which are more specifically pointed out inthe following specification and claims.

In the accompanying drawings, forming part of this specification, Figure1 is a side elevation of our improved machine. is a section inelevation, taken on the line X X of Fig. 3; and Fig. 3 is a plan view ofthe improved machine.

In the drawings, let A represent the frame on which the rolls B, O, andD are journaled. All the rolls are adapted to rotate in feeding contactwith the contiguous rolls at equal surface speed and in the direction ofthe arrow shown in Fig. 2. The varnish and conveying rolls B and D aremade, preferably, of steel or other slightly-resilient material, whilethe coating-roll O is elastic, similar to those in common use, as aprinters roll. The varnish-roll rotates in a reservoir E and is immersedin the fluid to be applied to the surface of the sheet metal. The fluidadhering to the varnish-roll is by it transferred to the coating-roll.The varnish, coating, and con- Veying rolls are mounted, respectively,on the shafts 2, 3, and 4. These shafts are journaled, respectively, inthe blocks 5, 6, and 7, which are slotted into the frame. The blocks 6are held in the frame by the strap-bars 8 and bolts 9. By removing thebolts and strapbars the coating-roll may be lifted out of the frame andplaced upon the brackets 10 free from contactwith the varnish and feedrolls. This is done for convenience in cleaning the coating-roll and toprevent damage due to contact with varnish when not in use. The bracketsare attached to the frame by bolts 11.

The journal-blocks 5 and 7 are adjustable in the frame by the set-bolts12 and 13, so that the pressure between the varnish and coating rolls orthe coating and conveying rolls may be varied, also that the peripheralfaces of the coating and conveying rolls may be separated when thicksheets of metal are coated.

The ancillary roll or dam F is journaled by the shaft 14 on the movablebars 15, by which it is adjustable toward and away from thevarnish-roll. These bars are moved upon the brackets 16 of the frame Aby the handscrews 17. The bars are held in place upon the brackets bythe bolts 38, which pass through the slots 39. The hand-screws may belocked in position by the hand lock-nuts Fig. 2,

- gears 20, 21, 2-2, and 23.

18. By turning the screws 17 when the locknuts 18 are loosened the rollF maybe moved to and from the periphery of the varnish-roll B, so as toregulate the amount of varnish carried by the varnish-roll on its uppersurface. By this adj ustment the amount of fluid fed to thecoating-roll, and in consequence the thickness of the coat of varnishapplied to the surface of the article passing through the machine, isfixed.

G represents the table from which the sheet metal is fed into themachine, attached to the frame by the screws.19. (Shown in Fig. 3.) Theshaft 4 carries the drive-pulley H, by which the rolls are driven.Motion is transmitted to the rolls from the drive-pulley by the train ofgearing K, which consists of the These gears are respectively carried bythe shafts 4:, 3, 2, and 14.

When the machine is in operation, the sheet of metal or other materialto be coated (represented by I in Fig. 2) is placed by hand upon thetable and fed between the conveying-roll and the coating-roll. Its lowerface receives the coat of varnish from the coatingroll as it movesforward. The coated plate passes from the rolls out upon the disks 24,which are free to revolve on the shafts 25 and 26. The shaft 25 isattached to the frame A and is stationary. The shaft 26 is attached tothe slotted arms 27, which are adjustable upon the frame A, by the bolts28. These bolts pass through the slots 29. By this means of adjustmentthe outer row of disks, as shown in Fig. 3, may be positioned to accom--modate any size of sheet metal that is coated in the machine. Theperipheries of the disks are preferably beveled to a sharp edge, so thatthe coated surface of the article may not be mutilated upon deliveryfrom the coating and conveying rolls. The plates may be lifted from thedisks by hand and put away to dry, as is customary with machines havingan endless belt or stationary table for delivering the coated article.

The scraper J is provided for the conveyingroll to clean its surface andprevent the varnish from coating the back of the sheet of metal.

When the sheets of metal are notbetween the rolls, the conveying-rollreceives the coat of varnish from the coating-roll. The scraper removesthis coat, and the varnish so removed drips into the trough 30, directlybelow the scraper. The scraper is attached to the bar 31, which isrecessed into the grooves 32 at each side of the frame and is movable inthe grooves by the hand-screws 33, which are threaded at 34c in theframe. By turning these hand-screws the scraper is moved toward and awayfrom the surface of the conveying-roll. The trough is provided withoutlets 35 and 36, which are positioned, respectively, on either side ofthe machine and penetrate the table G. The strainers 37, carried by thereservoir, receive the varnish from the outlets of the troughs. Thesestrainers are positioned over the reservoir into which the varnishpasses.

It is obvious that this machine may be constructed to coat articlesother than sheet metal without departing from the principles which wehave applied and also that the liquid used may be varnish, paint, or anyother fluid.

Having described our invention, what we claim as new, and desire toprotect by Letters Patent, is-

1. An apparatus of the class described, consisting of a coating-roll, aconveying-roll in feeding contact with and above said coatingroll, gearsfor driving said rolls at equal surface speed a varnish-reservoir,meansfor feedin g the varnish from said reservoir to the surface of saidcoating-roll, a scraper directed against the surface of saidconveying-roll, and a trough below the scraper having return-outlets tothe reservoir.

2. An apparatus of the class described, consisting of a coating-roll,acon veying-roll above said coating-roll, gears fordriving said rolls inforward direction at equal surface speed, a varnish-reservoir, means forfeeding the varnish from said reservoir to said coatingroll, and meansfor returning the surplus varnish from the surface of the conveying-rollto the reservoir; said rolls having their peripheral surfaces in closeproximity to feed the article forward and coat its lower surface.

3. A machine of the class described, consisting of a resilientcoating-roll, a conveyingroll rotating in close proximity above thecoat= ing-roll, a varnish-roll rotating with its surface in contact withthe surface of the coatin g-roll, 'a varnish-reservoir in which the varnish-roll rotates, means for regulating the amount of varnish on thesurface of said var nish-roll, a scraper directed against the surface ofthe conveying-roll, a trough with return-outlets to the reservoirpositioned below the scraper, and means for driving the rolls at equalsurface speed.

4:. An apparatus of the class described, con sisting of a coating-roll,a conveying-roll above said coating-roll, with its peripheral face infeeding contact with the coating-roll,- a varnish-reservoir, means forfeeding the varnish from said reservoir to said coatingroll, a scraperdirected against the surface of the conveying-roll, a trough below thescraper with return-outlets to the reservoir, a table adjoining therolls for feeding the article to be coated between the rolls, aplurality of disks for delivering the article coated from between therolls, said disks arranged in rows and journaled on shafts, means foradjusting the disks vertically and horizontally and gears for drivingsaid rolls at equal surface speed.

5. A machine of the class described, consisting of a varnish-roll, acoating-roll and a conveying-roll, each having its surface in contactwith its neighbor, a chain of intermeshing gears for driving said rollsin forward di-- rection, a reservoircontaining a bath of varnish saidvarnish-roll positioned in said bath, means for regulating the supply ofvarnish to said varnish-roll, a scraper directed against the surface ofthe conveying-roll for preventing the coating of the back of the articleoperated upon and the conveyingroll, a trough below the scraper havingreturn-outlets to the reservoir and strainers between said outlets andthe reservoir.

6. A machine for coating the surface of sheet metal, consisting incombination of a varnish-reservoir, a varnish-roll in said reservoir, acoating-roll in feeding contact with said varnish-roll, a rotating dam,means for adjusting said darn toward the surface of the varnish-roll toregulate the amount of varnish fed to the coating-roll from thereserconveying-roll, a trough below said scraper having return-outletsto the reservoir, a table G for supporting the article to be passedbetween the conveying and coating rolls and the delivery-disks 24journaled upon a frame for receiving the article from the conveying andcoating rolls.

7. A machine for coating the surface of sheet metal, consisting incombination witha series'of rolls in surface contact each with itsneighbor, means for driving said rolls at equal surface speed, and areservoir in which one of said rolls revolves, of a plurality ofjournaled disks to deliver the article coated from between two of saidrolls.

In testimony whereof we have signed our two subscribing witnesses.

voir, a conveying -roli above said coatingroll having its peripheralface in close proximity to the surface of the coating-roll, a train ofintermeshing gears on said varnish, coating, and conveying rolls androtating dam, a scraper J directed against the surface of the WILLIAM C.KAMMERER. JAMES J. MINER.

Witnesses:

JNo. V. SLocUM, F. G. BRADBURY.

